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6th Class Science Sorting Materials into Groups Question Bank Sorting Materials into Groups

  • question_answer
    Why are overhead cables not insulated?

    A)  Because air is a bad conductor of electricity.

    B)  Because air is a good conductor of electricity.

    C)  Bare wires conduct electricity better.

    D)  Both (b) and (c).

    Correct Answer: A

    Solution :

    Overhead cables need not be insulated because air is a bad conductor of electricity.


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